Cadillac DeVille 1985 to 2005 including:1985-1992 Fleetwood, 1993 Sixty Special, All FWD Forum Discussion, What is going on with my DeVille? in Past Cadillac Vehicle Discussion; Twice this week i went out to the car and first thing i notice is that the automatic locks dont ...

What is going on with my DeVille?

Twice this week i went out to the car and first thing i notice is that the automatic locks dont open when i hold the key in the unlock pos. Put the key in the ignition and turn on and the theft deterrent system kicks. This has only happened twice out of probably 40 times i have gone to the car. Go to check the codes and i get this list:

Re: What is going on with my DeVille?

AFTER DISCONNECTING YOUR BATTERY,TRY CLEARING ALL YOUR CODES, put kley in on position but dont start it, PUSH THE OFF AND WARM BUTTON AT SAME TIME TIL DASHBOARD LITE UP LIKE A CHRISTMAS TREE THEN IT WILL RUN THRough a bunch of codes if anything is wrong with it,When your dash reads "PCM?" HIT HIGH fan ARROW BUTTON ON climate controller you should see "data?" when u see this, hit the down arrow of lower fan button until u see"CLEAR COdES" might take 3-5 presses, press the high fan button for 2 seconds and your dash will read "CODES C;LEAR" and do this for all the codes.
to find the codes, when you get to the PCM? push the lower fan button and A,ICP,SIR etc... shows and repeat the steps above on all of those.
good luck, email me at sal371@webtv.net IF you need more help r come here and do a search.